//
//  Person.h
//  KVO
//
//  Created by gzjd on 2017/5/7.
//  Copyright © 2017年 gzjd. All rights reserved.
//

#import <Foundation/Foundation.h>
#import "BankAcount.h"
@interface Person : NSObject{
    BankAcount *bankAcount;
}
-(void)registerAsObserver;
@end
